DK164094B

DK164094B - LIGHT CONSTRUCTION ELEMENT, ISSUE FOR CARRIERS

Info

Publication number: DK164094B
Application number: DK609787A
Authority: DK
Inventors: Peter Rysavy; Hansjoerg Walter Baumann
Original assignee: Lonza Ag
Priority date: 1986-11-21
Filing date: 1987-11-20
Publication date: 1992-05-11
Also published as: CH671363A5; DE3763817D1; DK164094C; DK609787D0; ATE54623T1; EP0272454A3; DK609787A; EP0272454A2; EP0272454B1

Abstract

1. A light-weight structural member, particularly for the construction of vehicle doors, characterized by : a supporting core (1) of hard tough foam material : a foam core (2) of elastic material laminated by means of an intermediate layer (9) to one surface of said supporting core ; several fittings (6, 7) for the insertion of force transferring means, said fittings extending from the side of the supporting core (1) through said core and into the core (2) of elastic material ; and surface layers (4, 5) laminated to the outer faces of the foam material, said surface layers (4, 5) also serving to cover said fittings (6, 7).

Description

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Opfindelsen angår et nyt let konstruktionselement, særligt beregnet til dørkonstruktioner i vogne.The invention relates to a new lightweight construction element, especially intended for carriage door structures.

De tekniske krav, der stilles til et let konstruktions-5 element, særligt til konstruktion af vogndøre, er af forskellig art. Ved siden af vægten, skal den være selvbærende og korrosionsbestandig og have en minimal dimensionsforandring også ved intensiv solbestråling. Det skal derudover være egnet til til at kunne forarbejdes til 10 stor-formatede og bukkede overflader.The technical requirements for a lightweight structural element, especially for the construction of carriage doors, are of different kinds. Alongside the weight, it must be self-supporting and corrosion resistant and have a minimal dimensional change even in intense solar radiation. In addition, it must be suitable for processing into 10 large-format and curved surfaces.

Opfindelsen har til formål at angive et nyt let konstruktionselement, der har ovenfor nævnte egenskaber.The invention has for its object to provide a new lightweight construction element having the above-mentioned properties.

Dette formål opnås ifølge opfindelsen ved et let konstruktionselement, der har de i patentkrav 1 givne ejen-15 dommeligheder.This object is achieved according to the invention by a lightweight construction element having the characteristics given in claim 1.

Som bærende kerne anvendes skumstofpiader af sejhærdet materiale, fortrinsvis anvendes PVC-skumstof med lukket cellestruktur, der har en rumvægt fra 70 til 90 kg/m^. Tykkelsen af disse kerner kan efter behov varieres. I en 20 foretrukken udførelsesform anvendes en tykkelse fra 20 til 35 mm, og fortrinsvis en tykkelse fra 25 til 38 mm.As the core, foam pads of toughened material are used, preferably closed cell structure PVC foam having a weight range from 70 to 90 kg / m 2. The thickness of these cores can be varied as needed. In a preferred embodiment, a thickness of 20 to 35 mm is used, and preferably a thickness of 25 to 38 mm.

Det elastiske materiale består i en foretrukken udførelsesform af blødgjort polyvinylchloridskum eller af poly-ethylenskum med en vægtfylde på 30 til 60 kg/m^, og især 25 benyttes polyethylenskum.The resilient material consists in a preferred embodiment of plasticized polyvinyl chloride foam or of polyethylene foam having a density of 30 to 60 kg / m 2, and in particular polyethylene foam is used.

Tykkelsen af det elastiske materiale kan efter behov varieres. Tykkelsen af det elastiske materiale er mindre end den bærende kernes. I en foretrukken udførelsesform er tykkelsen 8-10 mm.The thickness of the elastic material can be varied as required. The thickness of the resilient material is less than that of the supporting core. In a preferred embodiment, the thickness is 8-10 mm.

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Mellem de nævnte skummaterialer er der anbragt et mellemlag, der ved hjælp af klæbning er fastgjort til de to overflader på de to skumstof kerner. Især anvendes en 5 to-komponentlim på polyurethanbasis eller epoxibasis.Between the said foam materials is an intermediate layer which is fixed by means of adhesive to the two surfaces of the two foam core. In particular, a 5-component polyurethane-based or epoxy-based adhesive is used.

I dette dobbeltsandwich-materiale er der udsparet hulrum til anbringelse af beslag, der er beregnet til optagning af og videreførelse af kræfter. Hulrummene må være udformet således, at beslagene kan sættes ind fra siden med 10 det sejhærdede materiale og ind i det elastiske materiale.In this double sandwich material, cavities are provided for the placement of fittings intended to absorb and carry forward forces. The cavities must be designed so that the fittings can be inserted from the side with the toughened material and into the elastic material.

I en foretrukken udførelsesform rager beslagene ind i det elastiske materiale, omkring halvdelen af dettes tykkelse.In a preferred embodiment, the fittings project into the elastic material, about half its thickness.

Beslagene tjener til optagelse og fordeling af kræfter. Sådanne beslag er f.eks. dørophængninger, låseaggregater, 15 tætningsbærere osv.The brackets serve to absorb and distribute forces. Such fittings are e.g. door hinges, lock assemblies, 15 seal carriers, etc.

Beslagene er i en foretrukken udførelsesform fremstillet af letmetal eller et ikke rustende stål.The fittings are in a preferred embodiment made of light metal or a non-rusting steel.

Dobbeltsandwich-elementet inklusive beslagene er på begge sider forsynet med et tætningslag. Dette tætningslag samt 20 mellemlaget mellem det sejhærdede og det elastiske materiale kan bestå af et fiberforstærket kunststof, f.eks. glasfiberforstærket, og har en tykkelse på 1-2,5 mm eller kan bestå af et metal med en tykkelse fra 0,8 til 1,5 mm, fortrinsvis bestående af aluminium. Disse dæklag er plet-25 mæssigt forbundet med dobbeltsandwich-elementet ved limning, f.eks. med en to-komponentlim. På grund af denne konstruktion er dæklaget svømmende forbundet med det fleksible materiale. I en foretrukken udførelsesform er dæklaget på det fleksible skumstofmateriale derudover 30 fastgjort til to ind til hianden liggende indbyrdes berøringskanter.The double sandwich element including the brackets is provided on both sides with a sealing layer. This sealing layer as well as the intermediate layer between the toughened and the elastic material may consist of a fiber-reinforced plastic, e.g. fiberglass reinforced, and having a thickness of 1-2.5 mm or may consist of a metal having a thickness of 0.8 to 1.5 mm, preferably consisting of aluminum. These cover layers are stainably connected to the double sandwich element by gluing, e.g. with a two-component adhesive. Because of this construction, the cover layer is swimmingly connected to the flexible material. In a preferred embodiment, the cover layer of the flexible foam material 30 is additionally attached to two adjacent contact edges.

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På grund af denne konstruktion er det muligt ved beskadigelse af det ydre dæklag at erstatte dette uden forandringer eller beskadigelser i hele det lette konstruk-5 tionselement.Due to this construction, it is possible to replace it without damage or damage throughout the lightweight structural element by damage to the outer cover layer.

Dette lette konstruktionselement ifølge opfindelsen har derudover følgende ønskede egenskaber: - selvbærende - let 10 - god termisk og akustisk isolering - korrosionsbestandig - minimale dimensionsforandringer ved intensiv solbestråling - velegnet for elementer med et stort format 15 - velegnet for bøjede elementer.This lightweight structural element according to the invention also has the following desired properties: - self-supporting - lightweight 10 - good thermal and acoustic insulation - corrosion resistant - minimal dimensional changes in intense solar radiation - suitable for large format elements 15 - suitable for bent elements.

Opfindelsen forklares i forbindelse med det efterfølgende eksempel.The invention is explained in connection with the following example.

I fig. 1 er vist en vognfløjdør.In FIG. 1 is shown a carriage wing door.

I fig. 2 og 3 er vist snit gennem denne fløjdør. Det lette 20 konstruktionselement består af en bærende skumstofkerne 1 af sejhærdet PVC-skumstof med lukket cellestruktur, og med en vægtfylde på 80 kg/m^ og en tykkelse på 25 mm, en elastisk skumstofkerne 2 af po lyethyl enskums to f med en vægtfylde på 30 kg/m^ og en tykkelse på 8 mm. Denne skum-25 stofkerne er ved hjælp af limlaget 3 pletvis forbundet med mellemdæklaget 9 og dæklagene 4 og 5 af aluminium (1 mm tykkelse).In FIG. 2 and 3 are shown sections through this wing door. The lightweight construction element consists of a foamed core core 1 of toughened PVC foam with closed cell structure, with a density of 80 kg / m 2 and a thickness of 25 mm, an elastic foam core 2 of polyethylene foam two f with a density of 30 kg / m 2 and a thickness of 8 mm. This foamy fabric core is stained, by means of the adhesive layer 3, with the middle cover layer 9 and the cover layers 4 and 5 of aluminum (1 mm thickness).

I dobbeltsandwich-elementet er anbragt beslag 6 til fløjdørsophængning og beslag 7 til låseaggregat. I elementet 30 findes et profil 8 til anbingelse af tætningsprofilet.Bracket 6 for wing door suspension and bracket 7 for lock assembly are arranged in the double sandwich element. In the element 30 there is a profile 8 for indicating the sealing profile.

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4 I fig. 4 vises fastgørelsen af det ydre dæklag ved hjælp af ombøjning og facetering af dæklaget over en kant.4 In FIG. 4, the attachment of the outer covering layer is shown by bending and faceting the covering layer over an edge.

Claims

Lightweight structural element, specially designed for carriage door structures, characterized in that it has a bearing core (1) of a toughened foam material, one on one side of the supporting core by means of an intermediate layer of foam-bonded core (2) a plurality of elastic material, plurality extending from the side of the supporting core and therethrough into the core of the elastic material, engaging 10 brackets (6,7) for absorbing and distributing forces, and a stain layer of foam material associated with the foam material (4, 5) on both outer surfaces of the core material, where this cover also serves to cover the brackets.

Lightweight structural element according to claim 1, characterized in that the supporting core consists of a PVC foam material with a closed cell structure.

Lightweight structural element according to claims 1 and 2, characterized in that the elastic material consists of polyethylene foam.

Lightweight structural element according to claims 1-3, characterized in that the intermediate cover layer and the outer cover layer between the toughened foam core and the elastic material are connected to the foam core by bonding (3).

Lightweight structural element according to claims 1-4, characterized in that the cover layer residing on the elastic foam fabric is further attached to two adjacent edges.